Recycling is the most common way to divert waste from landfills, but because secondary markets do not exist for every material, the next most beneficial use of waste materials is: _________.

Answer:

A person pushes a wheelbarrow, causing it to move forward.

Explanation:

This question involves the concepts of Newton's third law of motion and reaction force.

The example which illustrates Newton's Third Law of motion is "C. The force of a wheelbarrow on the ground is equal to the force of

the ground on the wheelbarrow.".

Newton's thrid law of motion states that for every action force there is an equal but opposite reaction force. Hence, the law means that whenever a force is applied, it must generate a reaction force which is equal in magnitude of the applied force but it must have the direction that is opposite to the direction of the applied force.

In part C the force applied by the wheel barrow on the ground is its weight. And as a reaction force the ground applies a normal force on the wheelbarrow with equal magnitude as the weight.

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The magnitude of the resultant displacement of the caterpillar is 1.4m. Therefore, option B is correct.

The change in the position of an object is called displacement, it is the distance between starting and endpoints. It has both magnitude and direction, it is a vector quantity.

If a caterpillar climbs 1.3 m up a tree, then 0.72 m right, the magnitude of resultant displacement is given by:

H² = P² + B²

H² = (1.3)² + (0.72)²

H² = 1.69 + 0.51

H = \(\sqrt2.2\)

H = 1.4m

Thus, the magnitude of the resultant displacement of the caterpillar is 1.4m. Therefore, option B is correct.

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Answer: No, constant speed does not mean constant velocity.

A classic often used example would be to consider a car driving in circles. If the speedometer reads say 20 mph the entire time, then the speed of the car is held constant (ie the same). But the velocity is changing because velocity measures direction along with speed. The car is changing direction as it moves in a circle.

The radius of the cylinder is approximately 2.19 m, and the cylinder is experiencing a deceleration of approximately 1.86 m/s². Since the cylinder is decelerating and the force applied is less than the friction force, it is not slipping.

From the given information:

Mass of the cylinder, m = 5 kg

Moment of inertia of the cylinder, I = 12 kg·m²

Diameter of the cylinder, D = 0.5 m

Force applied, F = 25 N

Coefficient of friction, μ = 0.7

Radius of the cylinder, r = ?

To determine the radius (r) of the cylinder, we can use the relationship between moment of inertia (I) and mass (m) for a solid cylinder:

I = (1/2) * m * r²

Given I = 12 kg·m² and m = 5 kg, we can solve for r:

12 = (1/2) * 5 * r²

r² = 12 / (1/2) * 5

r² = 12 / 2.5

r² = 4.8

r ≈ √4.8

r ≈ 2.19 m

So, the radius of the cylinder is approximately 2.19 m.

Now, let's determine the acceleration of the cylinder. The force applied is given as F = 25 N. The friction force can be calculated using the equation:

Friction force = μ * Normal force

Since the cylinder is being pulled by the string, the normal force is equal to the weight of the cylinder, which is given by:

Weight = mass * acceleration due to gravity

Weight = m * g

Assuming a standard acceleration due to gravity of 9.8 m/s²:

Weight = 5 kg * 9.8 m/s² = 49 N

Friction force = μ * Normal force = μ * Weight = 0.7 * 49 N = 34.3 N

Now, we can calculate the net force acting on the cylinder:

Net force = Force applied - Friction force

Net force = 25 N - 34.3 N

Net force = -9.3 N

Since the net force is negative, indicating that the force applied is less than the friction force, the cylinder will experience a deceleration rather than acceleration. The magnitude of the deceleration can be calculated using Newton's second law:

Net force = mass * acceleration

-9.3 N = 5 kg * acceleration

acceleration = -9.3 N / 5 kg

acceleration = -1.86 m/s²

The negative sign indicates that the deceleration is in the opposite direction to the force applied, which means the cylinder is moving in the direction opposite to the applied force.

Hence, the radius of the cylinder is approximately 2.19 m, and the cylinder is experiencing a deceleration of approximately 1.86 m/s². Since the cylinder is decelerating and the force applied is less than the friction force, it is not slipping.

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The phenomenon observed is doppler effect and the speed of the ambulance would be 374 m/s.

The Doppler effect equation for sound waves is given by:

f' = f(v ± v₀) / (v ± vᵢ)

Where f is the frequency of the emitted sound wave, f' is the observed frequency, v is the speed of sound in air, v₀ is the velocity of the observer relative to the air, and vᵢ is the velocity of the source relative to the air.

In this case, the person standing next to the road is the observer, and the ambulance is the source. The observed frequency f' is 0.9f, and the speed of sound in air v is 340 m/s.

Substituting these values into the equation, we get:

0.9f = f(v + v₀) / (v - vᵢ)

Simplifying and rearranging, we get:

v₀ = (0.1v + vᵢ)

The ambulance is moving away from the observer, so v₀ is negative. Substituting the known values, we get:

v = 340 m/s

v₀ = -0.1v

v - v₀ = v + 0.1v = 1.1v

Therefore, the velocity of the ambulance is:

vᵢ = v(1 - v₀/v) = v(1 + 0.1) = 1.1v

vᵢ = 1.1(340 m/s) = 374 m/s

So the speed of the ambulance is 374 m/s.

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The oven starts at the same temperature and pressure of as the air outside. the oven has a roughly cubic shape with each side measuring . the air inside the oven is heated to

The change in thermal energy of the air in the oven, we need to know the initial temperature, final temperature, and the volume of the oven. However, the provided information is incomplete. Please provide the measurements for each side of the oven, as well as the initial and final temperatures.

Regarding the problem of not letting air vent during the heating process, it can lead to an increase in pressure inside the oven. As the air inside the oven heats up, it expands and its pressure increases. If there's no vent to release this increased pressure, it may cause the oven to become damaged or even explode due to the excessive pressure build-up.

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False

The Pressure Gradient Force (PGF) is the force that drives air from areas of high pressure to areas of low pressure. In both a trough and a ridge, the PGF is the same.

However, the winds will not be the same in both features.  

In a trough, the winds tend to move towards the center of the trough, where the air is rising, and this causes convergence and lifting. This upward motion causes a decrease in pressure, leading to a steeper pressure gradient, which means stronger winds. On the other hand, in a ridge, the winds move away from the center of the ridge, where the air is sinking, and this causes divergence and sinking. This sinking motion causes an increase in pressure, leading to a weaker pressure gradient and lighter winds.  

Therefore, assuming the same PGF, the trough will have the faster winds compared to the ridge.

Three identical capacitors are connected in parallel to a potential source (battery). If a charge of Q flows into this combination, Each capacitor will carry a charge of Q/3.  

A capacitor is a two-terminal electrical device that can store energy in the form of an electric charge. It consists of two electrical conductors that are separated by a distance. The space between the conductors may be filled by vacuum or with an insulating material known as a dielectric.capacitor, device for storing electrical energy, consisting of two conductors in close proximity and insulated from each other. A simple example of such a storage device is the parallel-plate capacitor.

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Using the moment of inertia, the mass (m) of the sphere is found to be approximately 6.513 kg.

To find the mass of the sphere, we need to use the formulas for torque and rotational motion.

The formula for torque (τ) is given by:

τ = I × α

Where:

τ = Torque

I = Moment of inertia

α = Angular acceleration

The moment of inertia (I) for a solid sphere rotating about its center is given by:

I = (2/5) × m × r²

Where:

m = Mass of the sphere

r = Radius of the sphere

The formula for angular acceleration (α) is:

α = (ω - ω0) / t

Where:

ω = Final angular velocity

ω0 = Initial angular velocity

t = Time

First, we need to find the final angular velocity (ω) using the given information. We know that the sphere rotates through a total of 400 revolutions in 12.0 seconds. One revolution is equal to 2π radians, so the total angular displacement (θ) is:

θ = 400 revolutions × 2π radians/revolution

θ = 800π radians

The time (t) is given as 12.0 seconds. We can now calculate the final angular velocity:

ω = θ / t

ω = (800π radians) / (12.0 s)

ω ≈ 209.4395 rad/s

Since the sphere starts from rest, the initial angular velocity (ω0) is 0 rad/s. Plugging the values into the formula for angular acceleration:

α = (ω - ω0) / t

α = (209.4395 rad/s - 0 rad/s) / (12.0 s)

α ≈ 17.4533 rad/s²

Now, we can use the formula for torque to find the moment of inertia (I):

τ = I × α

30.0 m·N = I × 17.4533 rad/s²

Since the torque (τ) and angular acceleration (α) are given, we can solve for the moment of inertia (I). Rearranging the equation:

I = τ / α

I = 30.0 m·N / 17.4533 rad/s²

I ≈ 1.7204 kg·m²

Finally, we can use the moment of inertia to find the mass (m) of the sphere:

I = (2/5) × m × r²

1.7204 kg·m² = (2/5) × m × (0.8 m)²

Simplifying the equation:

m = (1.7204 kg·m²) / [(2/5) × (0.8 m)²]

m ≈ 6.513 kg

Therefore, the mass of the sphere is approximately 6.513 kg.

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Answer:

B.

Explanation:

The elastic potential energy of the spriy at position 2 is converted to kinetic energy.

The elastic potential energy of the spring at Position 2 is converted to kinetic energy. Option (B) is correct.

The energy held within an object is known as potential energy. There are several different types of potential energy, including gravitational potential energy, elastic potential energy, and electric potential energy.

Here, the energy that an object possesses as a result of its position in relation to other objects is referred to as its gravitational potential energy.

Elastic potential energy is the energy that an object possesses as a result of the stresses that exist inside its body.

At  Position 2, the elastic potential energy of the spring is converted to kinetic energy.

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Answer: The cost of using the microwave oven for 30 minutes every day for 9 days is $0.57

Explanation: The GRASS method is used to calculate the cost of using an appliance by multiplying the power rating of the appliance (in kW) by the hours of use, and then multiplying that by the rate per kWh.

Here's the calculation:

Power rating: 0.62 kW

Time of use: 30 minutes/day for 9 days = 30/60*9 = 13.5 hours

Cost per hour = 0.62 * 6.8 / 100 = 0.04236

Total cost = 0.04236 * 13.5 = $0.57

Answer:

4.0 m/s

Explanation:

The maximum speed would occur if all of the potential energy was converted to kinetic

U = K 16 = ½ mv2 16 = ½(2)v2

Answer:

(C)  all bodies

F = G M1 M2 / R^2     all bodies (M1 and M2)  are gravitationally connected

Answer:

C. In the passage, it seems that both of the cells have the same job, so I would go with C.

Answer:

It is (A) Calculate the force needed to stop the vehicle.

Explanation:

Answer:So the lamp post is giving energy to the town and the kid is using mecanical energy to ride his skateboard

Explanation:

11223.9J or 11.2239 kJ is the total internal energy of the gas.

Internal energy, which results from the motion of matter at the molecular level, is a type of energy that exists in all systems. For internal energy, the letter U is used, and the joule is the unit of measurement (J).

As a substance changes from one state or phase to another—from solid to liquid to gas—its internal energy also rises. It is possible to imagine planetary bodies as a fusion of heat engines and heat reservoirs.

The heat engines transform some of the thermal energy stored in the heat reservoirs into different forms of mechanical, electrical, and chemical energy.

The formula for total internal energy of gas is

(3/2)nRT

where n = amount of substance

R = Ideal gas constant

T = temperature

Put the value in the equation

(3/2)nRT

= (3/2)(3)( 8.314)(300)

= 11223.9J

Thus, 11223.9J or 11.2239 kJ is the total total internal energy of the gas.

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Answer:

gamma rays

Explanation:

When the pressure is 300 mmHg, the gas has an 800 cc volume.

According to this, a gas's volume drops as pressure on it rises at a constant temperature. In other words, while the temperature and the quantity of molecules are both constant, Boyle's law states that volume is inversely proportional to pressure.

The answer to the dilemma is that at constant temperature, the relationship between the gas's volume (V) and pressure (P) is inverse.

V ∝ 1/P

or

V = k/P

V = 1200 cc when P = 200 mmHg

These values are put into the formula above to get the following results:

1200 = k/200

k = 240000

V = 240000/300

V = 800 cc.

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Answer:

Explanation:

The amount of energy needed to apply a force of 1 newton over a distance of 1 meter is also called a joule. The joule (symbol: J) is the SI derived unit of energy. It is the energy transferred to an object when a force of one newton acts on that object in the direction of its motion through a distance of one meter. It is also the amount of energy required to heat 1 gram of water by 1 degree Celsius.

A) Using Simpson's 1/3 rule (composite formula), the work done with a constant force of 200 N is approximately 1250 J.

B) Using the MATLAB function trapz, the work done is approximately 7750 J.

Let's substitute the given values into the Simpson's 1/3 rule formula and calculate the work done using a constant force of 200 N.

A) Force (F) = 200 N (constant for all t)

Velocity (v) = 4t (0 ≤ t ≤ 5) and v = 20 + (5 - t)² (5 ≤ t ≤ 15)

Step size (h) = 0.25

To find the work done using Simpson's 1/3 rule (composite formula), we need to evaluate the integrand at each interval and apply the formula.

Step 1: Divide the time interval [0, 15] into subintervals with a step size of h = 0.25, resulting in 61 equally spaced points: t0, t1, t2, ..., t60.

Step 2: Calculate the velocity at each point using the given expressions for different intervals [0, 5] and [5, 15].

For 0 ≤ t ≤ 5: v = 4t For 5 ≤ t ≤ 15: v = 20 + (5 - t)²

Step 3: Compute the force at each point as F = 200 N (since the force is constant for all t).

Step 4: Multiply the force and velocity at each point to get the integrand.

For 0 ≤ t ≤ 5: F * v = 200 * (4t) For 5 ≤ t ≤ 15: F * v = 200 * [20 + (5 - t)²]

Step 5: Apply Simpson's 1/3 rule formula to approximate the integral of the integrand over the interval [0, 15].

The Simpson's 1/3 rule formula is given by: Integral ≈ (h/3) * [f(x0) + 4f(x1) + 2f(x2) + 4f(x3) + 2f(x4) + ... + 4f(xn-1) + f(xn)]

Here, h = 0.25, and n = 60 (since we have 61 equally spaced points, starting from 0).

Step 6: Multiply the result by the step size h to get the work done.

Work done: 1250 J

B) % Define the time intervals and step size

t = 0:0.25:15;

% Calculate the velocity based on the given expressions

v = zeros(size(t));

v(t <= 5) = 4 * t(t <= 5);

v(t >= 5) = 20 + (5 - t(t >= 5)).^2;

% Define the force value

F = 200;

% Calculate the work done using MATLAB's trapz function

\(work_t_r_a_p_z\) = trapz(t, F * v) * 0.25;

% Display the result

disp(['Work done using MATLAB''s trapz function: ' num2str(\(work_t_r_a_p_z\)) ' J']);

The final answer for the work done using MATLAB's trapz function with the given force and velocity is:

Work done using MATLAB's trapz function: 7750 J

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Utilitarianism's opponents say that it is a "doctrine worthy only of pigs". Because, they think that human beings have a higher purpose than the maximization of pleasure.

A moral theory known as utilitarianism favours activities that increase happiness or pleasure and disapproves of those that increase sadness or harm. A utilitarian ideology would seek to improve society as a whole when used to guide social, economic, or political decisions.

According to utilitarianism, a decision is morally correct if it makes the most people happy within a community or a group.

A moral theory known as utilitarianism favors activities that increase happiness and disapproves of those that decrease it.

"The greatest amount of benefit for the greatest number of people" is what utilitarianism advocates.

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The speed of the electron, after it has accelerated for 10^-9 seconds, is 10^5 m/s. The correct option is C.

Acceleration is the rate at which an object changes its velocity with respect to time. It is a vector quantity, which means it has both magnitude and direction. Mathematically, acceleration is defined as the change in velocity divided by the time taken for that change to occur.

Given:

Acceleration of the electron, a = F/m = 10^-14 N / 9.1 x 10^-31 kg = 1.0989 x 10^17 m/s^2

Time for which electron is accelerated, t = 10^-9 s

Using the equation, âv = at, where âv is the change in velocity, we get:

âv = at = 1.0989 x 10^17 m/s^2 x 10^-9 s = 1.0989 x 10^8 m/s

Therefore, the speed of the electron after it has accelerated for the 10^-9 second is approximately 10^8 m/s, which is closest to option (C) 10^5 m/s.

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The time taken for the bicycle to travel the given distance at the given velocity is 6.667 seconds.

Given the data in the question:

Distance travelled by the bicycle; \(S = 100m\)

Speed or velocity of the bicycle; \(v = 15m/s\)

Time taken for the bicycle to travel the given distance; \(t = ?\)

We know that speed is the rate of change of position of an object with respect to time.

That is to say, Speed = Distance / Time

Hence, Time = Distance / Speed

\(t = \frac{S}{v}\)

So, to get our time "t", we simply substitute in our given values

\(t = \frac{100m}{15m/s}\)

\(t = 6.667 s\)

Therefore, the time taken for the bicycle to travel the given distance at the given velocity is 6.667 seconds.

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if Circle one 100 g (least massive) and 200 g (most massive) have the same material then the least massive i.e 100g heat faster.

The amount of heat required to raise the temperature of an object is proportional to its mass. Specifically, the heat required is given by,

the formula

Q = m × c × ΔT

Where Q= is the amount of heat required

m= is the mass of the object

c= is the specific heat capacity of the material, and ΔT is the change in temperature.

If the two samples are made of the same material and have the same initial temperature, their specific heat capacities and the change in temperature will be the same.

Then, the amount of heat required to raise the temperature of the 100 g sample will be half that of the 200 g sample. This means that the 100 g sample will heat up more than the 200 g sample, as it requires less heat to raise its temperature.

Therefore, The sample with 100 g (least massive) will heat up faster than the sample with 200 g (most massive) if both samples are made of the same material and have the same initial temperature.

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To determine the large dimension, always big dimension should be preferred. Hence, option B is correct.

An area, region, or space's length or width in one direction is referred to as a dimension in mathematics. It merely involves taking an object's length, width, and height into account.

Dimension can be expressed in any one of them, such as Length, Breadth, Width, Height, or Depth.

According to the question, the best possible way to express the dimension in 1.04 m* 4.00 m is because both the dimensions are in the same unit, so it will be easy to calculate the dimension and another thing is that all other dimensions in the option are very small, so it will take more time to measure from them because the desk is large.

Hence, measuring with 1.04 m * 4.00 m will be the more convenient and the best way as well.

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Given:

The initial value of the current through the circuit is I.

To find:

The current through the circuit after the circuit is changed.

Explanation:

Let us assume that the total voltage supplied by the two batteries to the circuit is V.

And let us assume that the resistance of the bulb is R.

From Ohm's law, the voltage across the circuit is given by,

Thus the current will be,

When the two identical bulbs are connected, the total resistance of the circuit will be R+R=2R.

Thus from Ohm's law, the current through the resistance is given by,

On substituting the equation (i) in the above equation,

Final answer:

The current in the circuit after the circuit is changed is (1/2) I.